Carpenter&#39;s plane.



No. 799,234. PATENTBD SEPT. 12, 1905. J. JETT.

GARPBNTBRS PLANE.

APPLICATION FILED AUG. 18,1904.

JOHN JETT, OF SAN FRANCISCO, CALIFORNIA.

CARPENTERS PLANE.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed August 18, 1904:. Serial No. 221,296.

To all whom it may concern.-

Be it known that I, Jonn JETT, a citizen of the United States, and aresident of San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements inCarpenters Planes, of which the following is a specification.

The objects I have in view are, first, to produce an adjustable plane inwhich the bit or plane-iron is held more firmly and is more easy toadjust than heretofore; second, to produce an adjustable plane in whichthe different parts are less liable to become disarranged thanheretofore; and to this end the main feature of my invention consists inproviding a roller which extends across the plane in front of the bitand about midway between the top and bottom of the plane-stock andhaving an improved gearing between the roller and bit by which the bitis given a slow and positive movement and by which the bit is held inany position without the use of any locking device.

Another feature is to have the roller connected to a lever on theoutside of the stock and have a lug to hold the lever in place andprevent end movement of the roller.

Another feature is to provide a hood above the roller to protect,strengthen, and afford a continuous bearing for the same.

Another feature is to hold the bit and capplate more firmly together sothey will not become disarranged when the bit is carried under theroller.

Another feature is to have the gearing adjustably attached to thecap-plate, so that the lever will occupy a convenient position when thebit is clamped to the stock.

These features are more fully described in the following specification,reference being had to the accompanying drawings, which form a partthereof.

Figure 1 is aside view of my improved plane ready for use. Fig. 2 is alongitudinal sectional view of the central part of the plane, showingthe mechanism by which the bit is adjusted. Fig. 3 is an enlargedcross-section of the plane on the line 1 1 of Fig. 1, showing asectional view near the left-hand side of the plane looking forward, thebit cap-plate and gear-plate not being shown. Fig. A is a top view ofthe gear-plate, cap-plate, and bit in their proper position, the rollerbeing shown crosswise at the bottom. Fig. 5 is a cross-section on theline 2 2. of Fig. 4:. Fig. 6

' groove in the roller.

is a cross-section on the line 3 3 of Fig. I. Fig. 7 is a top view ofthe lever for adjusting the bit sidewisc. Fig. 8 is a longitudinalsectional view of the adjusting mechanism as applied to metalplane-stocks.

Similar letters refer to similar parts throughout the several views.

In the drawings, theletter S represents the plane-stock, which is cutout at the middle to receive the bit, the same as in the old-stylewooden-wedge plane-stock. The stock is then cut to receive the bushingx, of which there is one on each side of the stock, and is held theretoby the screws a, which enter the solid part of the stock, as shown inFig. 2. The bushing serves as a bearing to receive the roller R, whichextends through the stock about midway between the top and bottom infront of the bit. The roller is actuated by the lever L, which isrigidly attached thereto and is usually placed on the left-hand side ofthe plane, as shown in Fig. 1. These parts are held in place by the lug'1' on the bushing, a part of this lug being cut away to receive thebeveled part on the lever, and this beveled part is cut away, as at I,so as to pass the lug, and thus allow the roller to be removed andreplaced at will.

The roller is provided with a double spiral groove C, Fig. I, adapted toreceive the V- shaped rib on the gear-plate 1]. I prefer to have thisrib with a wider angle than the Then the rib and groove will not be inexact alincment, and the groove itself is cut wider to receive the rib.This will cause the gear-plate to have a slower movement when comparedwith the roller and will give a finer adjustment of the bit.

The gear-plate is pivoted to the dovetail sliding member (2 by the riveta. This member slides in the dovetail slot i, Fig. 6, in the cap-plate Cand is made adjustable thereto by the bolt 0 and the nut c. Thecap-plate has a small section C out out near its upper end, and thissection is made adjustable to the bit B by the cap-bolt I) and the nut(Z, which moves'up and down in the dovetail slot 1 in the bit, and whenthe bolt is tightened the nut will be wedged into the slot, and thusheld more firmly than where it is seated on a flat surface, and when itis desired to sharpen the bit the cap-plate is lifted off the adjustablesection without loosening the screw. By this arrangement I dispense withthe large hole which is usually placed at one end of the slot in thebit. I therefore make the slot of uniform width, which requires lesswork and less material.

Above the roller is the hood ]L, which serves to protect the gearing andstrengthen the roller and gives it a bearing the entire distance betweenthe bushings. It extends from side to side on the inside of the plane,and its cross-section, as shown in Fig. 2, is uniform from side to side.It extends under the abutment (4 at each side of the plane, as shown inFig. 3, and I prefer to have the semisleeve a on the bushing extend outflush with the abutment, as shown in Figs. 2 and 3, as this connects thehood firmly to the bushings; but this can be dispensed with, if desired.The abutment serves to hold theupper part of the hood firmly down on theroller and the lower part firmly down on the cap-plate, and when theroller is removed the hood is easily taken out.

I prefer to have the bed, or that part just behind the bit, cut away, asat f, Fig. 2, so as to allow the bit to spring when it is carried underthe roller; but this can be avoided by having the bit curved, upward inthe middle when out of the plane. Then when it is carried under therollerit will spring almost straight.

The bit can be adjusted sidewise by a pivoted lever, the lower end ofwhich enters the slot in the bit near the cap-screw similar to the onesnow in general use; but this requires a long slot, and consequently along bit, which is undesirable, and to avoid this I provide a lever N,which is pivoted to the brace Z) by the rivet b. The lower end of thisbrace is attached to the stock and the upper end is attached to thehandle H. It serves as a brace for the handle and also a support for thelever. The lower end of this lever is pressed or bent upward, as at n,and this part is provided with a slot n, adapted to receive the lug clat the lower end of the cap-bolt. This lug can be attached to the nutcl, as shown in Fig. 8, if desired. In either case it is attached firmlyto the bit. It will be seen that the raised part 21. extends up on eachside of the rivet and serves to guide the lug into the slot when the bitis being placed in the stock.

It will also be seen that the old style woodenwedge plane can beconverted to use the mechanism here described and can then be used withthe new or the old system, as desired. My improvement is also welladapted for metal plane-stocks, in which no bushing is required. Theabutment a, Fig. 8, is cast or riveted on each side above the hood andserves the same purpose as described in the wooden stock. The brace 6,instead of being a narrow strip as in the wooden plane, has its lowerend widened, so as to extend the entire width of the stock, and is bentinto the'form of an angle. The vertical part 2, passes through a slot inthe upper edge of the stock and is riveted on the outside. Thehorizontal part If rests on the upper edge of the stock. These two partsserve to hold the brace firmly to the stock and also serve to supportthe bit, which presses strongly thereon; otherwise the brace serves thesame purpose as in the wooden stock. Another feature in this plane isthe wooden fender w, attached to the bottom on the inside behind thebit. It may be an extension of the handle or may be a separate piece. Itserves to prevent the edge of the bit from being dulled when it is beingplaced in the stock. Another feature is to pivot the gear-plate directto the cap-plate and dispense with the dovetail sliding memberpreviously described. This works well where the bottom of the plane isnot subject to much wear and where the cap-plate is not shifted througha wide range.

When it is desired to remove the bit, the lever L is moved over to thefront end of the stock, causing the gear to release the bit, which canthen be taken out and replaced at will.

Having thus fully described my invention,

what I claim, and desire to secure byLett ers Patent, is-

1. A plane having a plane-iron and a gearing adjnstably attachedthereto, the gearing consisting of a gear-plate with a V-shaped ribthereon, and having a roller passing through the stock in front of theplane-iron and having a lever attached to the roller on the outside ofthe stock, and having the roller provided with a double spiral grooveadapted to engage the rib on the gear-plate and carry it forward underthe roller and thus bind it firmly to the stock.

2. A plane having a plane-iron and a gearing adjustably attached theretothe gearing consisting of a gear-plate with a V-shaped rib thereon andhaving a roller passing through the stock in front of the plane-iron theroller provided with-a double spiral groove with a less angle than therib on the gear-plate and adapted to engage the rib and carry it forwardunder the roller and thus bind it firmly to the stock.

3. A plane having a plane-iron and a gearing adjustably attached theretoand having a roller passing through the stock in front of theplane-iron, and having a lever attached to the roller on the outside ofthe stock and having a lug adapted to hold the lever in place andprevent end movement of the roller and having the roller provided withgearing adapted to engage the gearing on the plane-iron and carry itforward under the roller and thus bind itfirmly to the stock.

4. A plane having a'plane-iron and a capplate and a gearing adjustablyattached thereto and having a roller passing through the stock in frontof the cap-plate the roller provided with gearing adapted to engage thegearing on the cap-plate and carry it forward under lthe roller and thusbind it firmly to the stoc 5. A plane having a plane-iron and a capplatewith a small section cut out near its upper end and having the sectionadjustably attached to the plane-iron by a bolt and nut the nut beingadapted to Wedge into the slot of the plane-iron and having a gearingadjustably attached to the cap-plate and having a roller passing throughthe stool: in front of the cap-plate the roller provided with gearingadapted to engage the gearing on the capplate and carry it forward underthe roller and thus bind it firmly to the stock.

6. A plane having a plane-iron and a gear-

